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SignCorrectionInSVDandPCA
虽然奇异值分解（SVD）和特征值分解（EVD的）是行之有效的，可以通过先进的设施设备先进的算法，它不是通常所说，有一个内在的迹象，可以显着影响的不确定性的结论计算及诠释来自其结果。我们提供一个解决方案，标志模糊的问题确定了从奇异向量的内积和个人数据载体签署奇异向量的迹象。该数据可能有不同的载体，但它有它自身的定位和实际意义的选择方向，其中多数的向量点。这可以通过评估发现了内心的签署标志产品的总和。(Although the Singular Value Decomposition (SVD) and eigenvalue decomposition (EVD) are well-established and can be computed via state-of-the-art algorithms, it is not commonly mentioned that there is an intrinsic sign indeterminacy that can significantly impact the conclusions and interpretations drawn from their results. We provide a solution to the sign ambiguity problem by determining the sign of the singular vector from the sign of the inner product of the singular vector and the individual data vectors. The data vectors may have different orientation but it makes intuitive as well as practical sense to choose the direction in which the majority of the vectors point. This can be found by assessing the sign of the sum of the signed inner products. )
- 2010-07-01 09:49:23下载
- 积分：1
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work
说明： 关于层次分析的MATLAB源程序，对数学建模求解层次分析问题特别有用。(MATLAB-level analysis on the source of mathematical modeling to solve the issue of the level of analysis particularly useful.)
- 2008-09-21 12:04:15下载
- 积分：1
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BFGS
拟牛顿法和最速下降法(Steepest Descent Methods)一样只要求每一步迭代时知道目标函数的梯度。通过测量梯度的变化，构造一个目标函数的模型使之足以产生超线性收敛性。这类方法大大优于最速下降法，尤其对于困难的问题。另外，因为拟牛顿法不需要二阶导数的信息，所以有时比牛顿法(Newton s Method)更为有效。如今，优化软件中包含了大量的拟牛顿算法用来解决无约束，约束，和大规模的优化问题。(The quasi-Newton method and the Steepest Descent Methods only require that each step iterations know the gradient of the objective function. By measuring the change of the gradient, constructing a model of the objective function is sufficient to produce superlinear convergence. This method is much better than the steepest descent method, especially for difficult problems. In addition, because the quasi-Newton method does not require information on the second derivative, it is sometimes more effective than the Newton s Method. Today, the optimization software contains a large number of quasi-Newton algorithm used to solve the unconstrained, constraint, and large-scale optimization problems.)
- 2017-05-05 10:28:29下载
- 积分：1
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zhengxuan1
给予声卡和MATLAB的编程，生成正弦波，声卡是外置的usb声卡，自己电脑的声卡也行(Sound card and MATLAB programming to generate sine wave, is an external sound card usb sound card, your computer' s sound card has line)
- 2010-09-02 15:48:56下载
- 积分：1
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Matlab-neutral-network-toolbox-
说明： Matlab神经网络工具箱应用简介,简要介绍在MATLAB里圣经网络工具箱的安装\使用和设置(Matlab neutral network toolbox )
- 2011-03-18 17:03:14下载
- 积分：1
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MATLAB6.5
matlab 6.5电子书，包含了一整本书的内容，内容清晰易懂，查看很方便。对于高版本的matlab环境也适用(Matlab 6.5 e-book contains an entire book, clear and easy to understand, the view is very convenient. Also applies for the high version of the Matlab environment)
- 2012-06-04 09:32:13下载
- 积分：1
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Gmd2lc
Gmld2c matlab process code
- 2014-09-10 22:38:36下载
- 积分：1
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wjli_enhance_coeff_local_bilateral
获得图像局部增强时，每个象素的指数增强系数，指数增强系数有原图像中的灰度值与其周边象素比较获得([Coeff_en_local, lum_mask]=enhance_coeff_local_bilateral(lum_ori,window_r,sigmad,sigmar))
- 2010-08-03 09:48:43下载
- 积分：1
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imelcepst
这是之前上传的Extract_test_IMFCC程序里面调用的子函数，作配合使用，请看清楚再下载.(This is one subfunction of Extract_test_IMFCC uploaded before.Since pudn.com cannot upload several functions, they must divided.)
- 2013-11-17 10:33:39下载
- 积分：1
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matlab
matlab常用函数表,包含常用的matlab函数，比较齐全(matlab function that consist of the matlab function.)
- 2014-08-28 20:20:39下载
- 积分：1
